Model profile · Anthropic

claude-opus-5.5-high

Closed weightsmid · registry tag 2026 benchmark-derived

Thin verified coverage

Reads as thin verified coverage across the resolved source data. Capability fit excludes speed and cost.

Visible coverage: 9.6%
Verified coverage: 9.6%
Spread: 34.1%
Last verified: Oct 3, 2026

97%capability fit

textcodedocumentvision3 aliases24 official source links

Open compare

Data version

Current snapshot.

Published Oct 3, 2026Model list checked4 stale sources105 claim warnings9 providers · 1334 tracked models

The registry snapshot and page stamp are shown so a stale deploy is visible at a glance. View live data status.

Source-linked scores by benchmark

Each row keeps the benchmark source, source type, raw metric, and percentile inside its fair comparison set. Capability summaries exclude archived categories, speed, and cost; those rows remain below.

Thin verified coverageThis model currently reads as thin verified coverage across the resolved source data.

Chat / text26 benchmarks93.6%

Intelligence Index

AA · Chat / text · Combined

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #4 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 54
Percentile: 99.5%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `intelligenceIndex`.

99.5% percentile inside its fair comparison set

54Raw benchmark value

AA-Omniscience accuracy

AA · Chat / text · Objective

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #7 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 64.6%
Percentile: 98.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `omniscienceAccuracy`.

98.7% percentile inside its fair comparison set

64.6%Raw benchmark value

AA-Omniscience non-hallucination

AA · Chat / text · Objective

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #158 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 32.4%
Percentile: 65.3%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `omniscienceNonHallucination`.

65.3% percentile inside its fair comparison set

32.4%Raw benchmark value

Input price

AA · Chat / text · Speed / cost

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #321 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: $4 /1M input tokens
Percentile: 11.6%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `price1mInputTokens`.

11.6% percentile inside its fair comparison set

$4 /1M input tokensRaw benchmark value

Output price

AA · Chat / text · Speed / cost

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #322 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: $20 /1M output tokens
Percentile: 11%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `price1mOutputTokens`.

11% percentile inside its fair comparison set

$20 /1M output tokensRaw benchmark value

Output Speed

AA · Chat / text · Speed / cost

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #155 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 74.4 tokens/s
Percentile: 41.2%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `medianOutputTokensPerSecond`.

41.2% percentile inside its fair comparison set

74.4 tokens/sRaw benchmark value

Time to first token

AA · Chat / text · Speed / cost

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #230 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 37.37s
Percentile: 13.3%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `medianTimeToFirstTokenSeconds`.

13.3% percentile inside its fair comparison set

37.37sRaw benchmark value

Time to first answer token

AA · Chat / text · Speed / cost

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #193 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 37.37s
Percentile: 26.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `medianTimeToFirstAnswerTokenSeconds`.

26.7% percentile inside its fair comparison set

37.37sRaw benchmark value

Text Arena

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #4 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,504
Percentile: 99.2%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: overall. Source rank: #4. Votes: 4552. Organization: anthropic. License: Proprietary.

99.2% percentile inside its fair comparison set

1,504Raw benchmark valueCI 1,495 - 1,513

Text Arena · Creative Writing

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,516
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: creative_writing. Source rank: #2. Votes: 1058. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,516Raw benchmark valueCI 1,497 - 1,536

Text Arena · English

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #6 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,506
Percentile: 98.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: english. Source rank: #6. Votes: 1719. Organization: anthropic. License: Proprietary.

98.7% percentile inside its fair comparison set

1,506Raw benchmark valueCI 1,492 - 1,520

Text Arena · Exclude Ties

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #4 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,523
Percentile: 99.2%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: exclude_ties. Source rank: #4. Votes: 3283. Organization: anthropic. License: Proprietary.

99.2% percentile inside its fair comparison set

1,523Raw benchmark valueCI 1,510 - 1,536

Text Arena · Hard Prompts

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,534
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: hard_prompts. Source rank: #2. Votes: 2837. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,534Raw benchmark valueCI 1,523 - 1,545

Text Arena · Hard Prompts English

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #3 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,536
Percentile: 99.5%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: hard_prompts_english. Source rank: #3. Votes: 1083. Organization: anthropic. License: Proprietary.

99.5% percentile inside its fair comparison set

1,536Raw benchmark valueCI 1,518 - 1,553

Text Arena · Instruction Following

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,517
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: instruction_following. Source rank: #2. Votes: 1550. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,517Raw benchmark valueCI 1,502 - 1,533

Text Arena · Longer Query

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,526
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: longer_query. Source rank: #2. Votes: 1929. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,526Raw benchmark valueCI 1,512 - 1,540

Text Arena · Multi Turn

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #9 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,500
Percentile: 97.9%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: multi_turn. Source rank: #9. Votes: 567. Organization: anthropic. License: Proprietary.

97.9% percentile inside its fair comparison set

1,500Raw benchmark valueCI 1,476 - 1,525

Text Arena · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,512
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: overall. Source rank: #2. Votes: 4552. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,512Raw benchmark valueCI 1,503 - 1,521

Text Arena · Creative Writing · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #1 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,532
Percentile: 100%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: creative_writing. Source rank: #1. Votes: 1058. Organization: anthropic. License: Proprietary.

100% percentile inside its fair comparison set

1,532Raw benchmark valueCI 1,512 - 1,551

Text Arena · English · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,513
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: english. Source rank: #2. Votes: 1719. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,513Raw benchmark valueCI 1,498 - 1,527

Text Arena · Exclude Ties · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,532
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: exclude_ties. Source rank: #2. Votes: 3283. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,532Raw benchmark valueCI 1,519 - 1,545

Text Arena · Hard Prompts · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,535
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: hard_prompts. Source rank: #2. Votes: 2837. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,535Raw benchmark valueCI 1,524 - 1,547

Text Arena · Hard Prompts English · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,537
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: hard_prompts_english. Source rank: #2. Votes: 1083. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,537Raw benchmark valueCI 1,519 - 1,555

Text Arena · Instruction Following · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,534
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: instruction_following. Source rank: #2. Votes: 1550. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,534Raw benchmark valueCI 1,519 - 1,549

Text Arena · Longer Query · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,534
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: longer_query. Source rank: #2. Votes: 1929. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,534Raw benchmark valueCI 1,520 - 1,548

Text Arena · Multi Turn · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #8 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,501
Percentile: 98.1%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: multi_turn. Source rank: #8. Votes: 567. Organization: anthropic. License: Proprietary.

98.1% percentile inside its fair comparison set

1,501Raw benchmark valueCI 1,477 - 1,526

Coding3 benchmarks96%

SciCode

AA · Coding · Objective

It tells you whether the model can generate, repair, and reason over code under evaluator pressure rather than marketing examples.

Rank #9 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 60.4%
Percentile: 96%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `scicode`.

96% percentile inside its fair comparison set

60.4%Raw benchmark value

Text Arena · Coding

AR · Coding · Human

It tells you whether the model can generate, repair, and reason over code under evaluator pressure rather than marketing examples.

Rank #12 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,538
Percentile: 97%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: coding. Source rank: #12. Votes: 1060. Organization: anthropic. License: Proprietary.

97% percentile inside its fair comparison set

1,538Raw benchmark valueCI 1,521 - 1,556

Text Arena · Coding · No Style Control

AR · Coding · Human

It tells you whether the model can generate, repair, and reason over code under evaluator pressure rather than marketing examples.

Rank #3 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,535
Percentile: 99.5%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: coding. Source rank: #3. Votes: 1060. Organization: anthropic. License: Proprietary.

99.5% percentile inside its fair comparison set

1,535Raw benchmark valueCI 1,517 - 1,553

Reasoning / math / science4 benchmarks98.4%

Humanity's Last Exam

AA · Reasoning / math / science · Objective

It is one of the cleaner reads on deliberate reasoning strength rather than style or popularity.

Rank #7 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 55.6%
Percentile: 98.9%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `hle`.

98.9% percentile inside its fair comparison set

55.6%Raw benchmark value

CritPt

AA · Reasoning / math / science · Objective

It is one of the cleaner reads on deliberate reasoning strength rather than style or popularity.

Rank #11 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 30.9%
Percentile: 98%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `critpt`.

98% percentile inside its fair comparison set

30.9%Raw benchmark value

Text Arena · Math

AR · Reasoning / math / science · Human

It is one of the cleaner reads on deliberate reasoning strength rather than style or popularity.

Rank #8 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,510
Percentile: 98.1%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: math. Source rank: #8. Votes: 235. Organization: anthropic. License: Proprietary.

98.1% percentile inside its fair comparison set

1,510Raw benchmark valueCI 1,475 - 1,546

Text Arena · Math · No Style Control

AR · Reasoning / math / science · Human

It is one of the cleaner reads on deliberate reasoning strength rather than style or popularity.

Rank #8 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,516
Percentile: 98.1%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: math. Source rank: #8. Votes: 235. Organization: anthropic. License: Proprietary.

98.1% percentile inside its fair comparison set

1,516Raw benchmark valueCI 1,480 - 1,552

Professional reasoning18 benchmarksn/a

Text Arena · Expert

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena expert leaderboard.

Rank #6 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,541
Percentile: 98.5%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: expert. Source rank: #6. Votes: 505. Organization: anthropic. License: Proprietary.

98.5% percentile inside its fair comparison set

1,541Raw benchmark valueCI 1,514 - 1,567

Text Arena · Industry Business And Management And Financial Operations

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_business_and_management_and_financial_operations leaderboard.

Rank #12 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,489
Percentile: 97%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_business_and_management_and_financial_operations. Source rank: #12. Votes: 830. Organization: anthropic. License: Proprietary.

97% percentile inside its fair comparison set

1,489Raw benchmark valueCI 1,468 - 1,510

Text Arena · Industry Entertainment And Sports And Media

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_entertainment_and_sports_and_media leaderboard.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,501
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_entertainment_and_sports_and_media. Source rank: #2. Votes: 1181. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,501Raw benchmark valueCI 1,483 - 1,519

Text Arena · Industry Legal And Government

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_legal_and_government leaderboard.

Rank #21 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,493
Percentile: 94.3%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_legal_and_government. Source rank: #21. Votes: 425. Organization: anthropic. License: Proprietary.

94.3% percentile inside its fair comparison set

1,493Raw benchmark valueCI 1,464 - 1,522

Text Arena · Industry Life And Physical And Social Science

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_life_and_physical_and_social_science leaderboard.

Rank #7 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,521
Percentile: 98.4%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_life_and_physical_and_social_science. Source rank: #7. Votes: 764. Organization: anthropic. License: Proprietary.

98.4% percentile inside its fair comparison set

1,521Raw benchmark valueCI 1,500 - 1,543

Text Arena · Industry Mathematical

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_mathematical leaderboard.

Rank #6 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,521
Percentile: 98.6%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_mathematical. Source rank: #6. Votes: 290. Organization: anthropic. License: Proprietary.

98.6% percentile inside its fair comparison set

1,521Raw benchmark valueCI 1,489 - 1,553

Text Arena · Industry Medicine And Healthcare

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_medicine_and_healthcare leaderboard.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,539
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_medicine_and_healthcare. Source rank: #2. Votes: 318. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,539Raw benchmark valueCI 1,505 - 1,573

Text Arena · Industry Software And It Services

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_software_and_it_services leaderboard.

Rank #9 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,530
Percentile: 97.9%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_software_and_it_services. Source rank: #9. Votes: 1643. Organization: anthropic. License: Proprietary.

97.9% percentile inside its fair comparison set

1,530Raw benchmark valueCI 1,516 - 1,544

Text Arena · Industry Writing And Literature And Language

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_writing_and_literature_and_language leaderboard.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,519
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_writing_and_literature_and_language. Source rank: #2. Votes: 1359. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,519Raw benchmark valueCI 1,502 - 1,536

Text Arena · Expert · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena expert leaderboard.

Rank #3 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,551
Percentile: 99.4%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: expert. Source rank: #3. Votes: 505. Organization: anthropic. License: Proprietary.

99.4% percentile inside its fair comparison set

1,551Raw benchmark valueCI 1,524 - 1,577

Text Arena · Industry Business And Management And Financial Operations · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_business_and_management_and_financial_operations leaderboard.

Rank #8 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,492
Percentile: 98.1%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_business_and_management_and_financial_operations. Source rank: #8. Votes: 830. Organization: anthropic. License: Proprietary.

98.1% percentile inside its fair comparison set

1,492Raw benchmark valueCI 1,471 - 1,512

Text Arena · Industry Entertainment And Sports And Media · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_entertainment_and_sports_and_media leaderboard.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,513
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_entertainment_and_sports_and_media. Source rank: #2. Votes: 1181. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,513Raw benchmark valueCI 1,495 - 1,531

Text Arena · Industry Legal And Government · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_legal_and_government leaderboard.

Rank #7 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,509
Percentile: 98.3%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_legal_and_government. Source rank: #7. Votes: 425. Organization: anthropic. License: Proprietary.

98.3% percentile inside its fair comparison set

1,509Raw benchmark valueCI 1,481 - 1,538

Text Arena · Industry Life And Physical And Social Science · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_life_and_physical_and_social_science leaderboard.

Rank #4 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,527
Percentile: 99.2%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_life_and_physical_and_social_science. Source rank: #4. Votes: 764. Organization: anthropic. License: Proprietary.

99.2% percentile inside its fair comparison set

1,527Raw benchmark valueCI 1,506 - 1,548

Text Arena · Industry Mathematical · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_mathematical leaderboard.

Rank #5 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,529
Percentile: 98.9%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_mathematical. Source rank: #5. Votes: 290. Organization: anthropic. License: Proprietary.

98.9% percentile inside its fair comparison set

1,529Raw benchmark valueCI 1,497 - 1,561

Text Arena · Industry Medicine And Healthcare · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_medicine_and_healthcare leaderboard.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,535
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_medicine_and_healthcare. Source rank: #2. Votes: 318. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,535Raw benchmark valueCI 1,501 - 1,569

Text Arena · Industry Software And It Services · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_software_and_it_services leaderboard.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,530
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_software_and_it_services. Source rank: #2. Votes: 1643. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,530Raw benchmark valueCI 1,516 - 1,544

Text Arena · Industry Writing And Literature And Language · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_writing_and_literature_and_language leaderboard.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,531
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_writing_and_literature_and_language. Source rank: #2. Votes: 1359. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,531Raw benchmark valueCI 1,514 - 1,548

Long context1 benchmark94.7%

Long Context Reasoning

AA · Long context · Objective

It checks whether long-context claims survive contact with retrieval, memory, or long-document tasks.

Rank #26 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 82.7%
Percentile: 94.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `lcr`.

94.7% percentile inside its fair comparison set

82.7%Raw benchmark value

Vision understanding1 benchmark97.1%

MMMU-Pro

AA · Vision understanding · Objective

It is useful when the model must read charts, UI, screenshots, or visual scenes rather than text alone.

Rank #7 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 85.8%
Percentile: 97.1%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `mmmuPro`.

97.1% percentile inside its fair comparison set

85.8%Raw benchmark value

Multilingual6 benchmarksn/a

Text Arena · Chinese

AR · Multilingual · Human

Observed user preference in Arena's Text Arena chinese leaderboard.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,571
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: chinese. Source rank: #2. Votes: 402. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,571Raw benchmark valueCI 1,542 - 1,601

Text Arena · Non English

AR · Multilingual · Human

Observed user preference in Arena's Text Arena non_english leaderboard.

Rank #3 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,494
Percentile: 99.5%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: non_english. Source rank: #3. Votes: 2829. Organization: anthropic. License: Proprietary.

99.5% percentile inside its fair comparison set

1,494Raw benchmark valueCI 1,483 - 1,505

Text Arena · Russian

AR · Multilingual · Human

Observed user preference in Arena's Text Arena russian leaderboard.

Rank #9 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,504
Percentile: 97.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: russian. Source rank: #9. Votes: 605. Organization: anthropic. License: Proprietary.

97.7% percentile inside its fair comparison set

1,504Raw benchmark valueCI 1,480 - 1,527

Text Arena · Chinese · No Style Control

AR · Multilingual · Human

Observed user preference in Arena's Text Arena chinese leaderboard.

Rank #3 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,583
Percentile: 99.4%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: chinese. Source rank: #3. Votes: 402. Organization: anthropic. License: Proprietary.

99.4% percentile inside its fair comparison set

1,583Raw benchmark valueCI 1,554 - 1,613

Text Arena · Non English · No Style Control

AR · Multilingual · Human

Observed user preference in Arena's Text Arena non_english leaderboard.

Rank #3 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,503
Percentile: 99.5%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: non_english. Source rank: #3. Votes: 2829. Organization: anthropic. License: Proprietary.

99.5% percentile inside its fair comparison set

1,503Raw benchmark valueCI 1,492 - 1,514

Text Arena · Russian · No Style Control

AR · Multilingual · Human

Observed user preference in Arena's Text Arena russian leaderboard.

Rank #6 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,507
Percentile: 98.5%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: russian. Source rank: #6. Votes: 605. Organization: anthropic. License: Proprietary.

98.5% percentile inside its fair comparison set

1,507Raw benchmark valueCI 1,484 - 1,531

Source links and registry checks

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Artificial Analysis

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Model profile · Anthropic

claude-opus-5.5-high

Closed weightsmid · registry tag 2026 benchmark-derived

Thin verified coverage

Reads as thin verified coverage across the resolved source data. Capability fit excludes speed and cost.

Visible coverage: 9.6%
Verified coverage: 9.6%
Spread: 34.1%
Last verified: Oct 3, 2026

97%capability fit

textcodedocumentvision3 aliases24 official source links

Open compare

Data version

Current snapshot.

Published Oct 3, 2026Model list checked4 stale sources105 claim warnings9 providers · 1334 tracked models

The registry snapshot and page stamp are shown so a stale deploy is visible at a glance. View live data status.

Source-linked scores by benchmark

Thin verified coverageThis model currently reads as thin verified coverage across the resolved source data.

Chat / text26 benchmarks93.6%

Intelligence Index

AA · Chat / text · Combined

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #4 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 54
Percentile: 99.5%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `intelligenceIndex`.

99.5% percentile inside its fair comparison set

54Raw benchmark value

AA-Omniscience accuracy

AA · Chat / text · Objective

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #7 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 64.6%
Percentile: 98.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `omniscienceAccuracy`.

98.7% percentile inside its fair comparison set

64.6%Raw benchmark value

AA-Omniscience non-hallucination

AA · Chat / text · Objective

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #158 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 32.4%
Percentile: 65.3%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `omniscienceNonHallucination`.

65.3% percentile inside its fair comparison set

32.4%Raw benchmark value

Input price

AA · Chat / text · Speed / cost

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #321 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: $4 /1M input tokens
Percentile: 11.6%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `price1mInputTokens`.

11.6% percentile inside its fair comparison set

$4 /1M input tokensRaw benchmark value

Output price

AA · Chat / text · Speed / cost

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #322 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: $20 /1M output tokens
Percentile: 11%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `price1mOutputTokens`.

11% percentile inside its fair comparison set

$20 /1M output tokensRaw benchmark value

Output Speed

AA · Chat / text · Speed / cost

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #155 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 74.4 tokens/s
Percentile: 41.2%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `medianOutputTokensPerSecond`.

41.2% percentile inside its fair comparison set

74.4 tokens/sRaw benchmark value

Time to first token

AA · Chat / text · Speed / cost

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #230 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 37.37s
Percentile: 13.3%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `medianTimeToFirstTokenSeconds`.

13.3% percentile inside its fair comparison set

37.37sRaw benchmark value

Time to first answer token

AA · Chat / text · Speed / cost

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #193 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 37.37s
Percentile: 26.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `medianTimeToFirstAnswerTokenSeconds`.

26.7% percentile inside its fair comparison set

37.37sRaw benchmark value

Text Arena

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #4 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,504
Percentile: 99.2%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: overall. Source rank: #4. Votes: 4552. Organization: anthropic. License: Proprietary.

99.2% percentile inside its fair comparison set

1,504Raw benchmark valueCI 1,495 - 1,513

Text Arena · Creative Writing

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,516
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: creative_writing. Source rank: #2. Votes: 1058. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,516Raw benchmark valueCI 1,497 - 1,536

Text Arena · English

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #6 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,506
Percentile: 98.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: english. Source rank: #6. Votes: 1719. Organization: anthropic. License: Proprietary.

98.7% percentile inside its fair comparison set

1,506Raw benchmark valueCI 1,492 - 1,520

Text Arena · Exclude Ties

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #4 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,523
Percentile: 99.2%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: exclude_ties. Source rank: #4. Votes: 3283. Organization: anthropic. License: Proprietary.

99.2% percentile inside its fair comparison set

1,523Raw benchmark valueCI 1,510 - 1,536

Text Arena · Hard Prompts

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,534
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: hard_prompts. Source rank: #2. Votes: 2837. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,534Raw benchmark valueCI 1,523 - 1,545

Text Arena · Hard Prompts English

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #3 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,536
Percentile: 99.5%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: hard_prompts_english. Source rank: #3. Votes: 1083. Organization: anthropic. License: Proprietary.

99.5% percentile inside its fair comparison set

1,536Raw benchmark valueCI 1,518 - 1,553

Text Arena · Instruction Following

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,517
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: instruction_following. Source rank: #2. Votes: 1550. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,517Raw benchmark valueCI 1,502 - 1,533

Text Arena · Longer Query

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,526
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: longer_query. Source rank: #2. Votes: 1929. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,526Raw benchmark valueCI 1,512 - 1,540

Text Arena · Multi Turn

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #9 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,500
Percentile: 97.9%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: multi_turn. Source rank: #9. Votes: 567. Organization: anthropic. License: Proprietary.

97.9% percentile inside its fair comparison set

1,500Raw benchmark valueCI 1,476 - 1,525

Text Arena · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,512
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: overall. Source rank: #2. Votes: 4552. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,512Raw benchmark valueCI 1,503 - 1,521

Text Arena · Creative Writing · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #1 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,532
Percentile: 100%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: creative_writing. Source rank: #1. Votes: 1058. Organization: anthropic. License: Proprietary.

100% percentile inside its fair comparison set

1,532Raw benchmark valueCI 1,512 - 1,551

Text Arena · English · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,513
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: english. Source rank: #2. Votes: 1719. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,513Raw benchmark valueCI 1,498 - 1,527

Text Arena · Exclude Ties · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,532
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: exclude_ties. Source rank: #2. Votes: 3283. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,532Raw benchmark valueCI 1,519 - 1,545

Text Arena · Hard Prompts · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,535
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: hard_prompts. Source rank: #2. Votes: 2837. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,535Raw benchmark valueCI 1,524 - 1,547

Text Arena · Hard Prompts English · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,537
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: hard_prompts_english. Source rank: #2. Votes: 1083. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,537Raw benchmark valueCI 1,519 - 1,555

Text Arena · Instruction Following · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,534
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: instruction_following. Source rank: #2. Votes: 1550. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,534Raw benchmark valueCI 1,519 - 1,549

Text Arena · Longer Query · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,534
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: longer_query. Source rank: #2. Votes: 1929. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,534Raw benchmark valueCI 1,520 - 1,548

Text Arena · Multi Turn · No Style Control

AR · Chat / text · Human

It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.

Rank #8 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,501
Percentile: 98.1%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: multi_turn. Source rank: #8. Votes: 567. Organization: anthropic. License: Proprietary.

98.1% percentile inside its fair comparison set

1,501Raw benchmark valueCI 1,477 - 1,526

Coding3 benchmarks96%

SciCode

AA · Coding · Objective

It tells you whether the model can generate, repair, and reason over code under evaluator pressure rather than marketing examples.

Rank #9 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 60.4%
Percentile: 96%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `scicode`.

96% percentile inside its fair comparison set

60.4%Raw benchmark value

Text Arena · Coding

AR · Coding · Human

It tells you whether the model can generate, repair, and reason over code under evaluator pressure rather than marketing examples.

Rank #12 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,538
Percentile: 97%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: coding. Source rank: #12. Votes: 1060. Organization: anthropic. License: Proprietary.

97% percentile inside its fair comparison set

1,538Raw benchmark valueCI 1,521 - 1,556

Text Arena · Coding · No Style Control

AR · Coding · Human

It tells you whether the model can generate, repair, and reason over code under evaluator pressure rather than marketing examples.

Rank #3 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,535
Percentile: 99.5%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: coding. Source rank: #3. Votes: 1060. Organization: anthropic. License: Proprietary.

99.5% percentile inside its fair comparison set

1,535Raw benchmark valueCI 1,517 - 1,553

Reasoning / math / science4 benchmarks98.4%

Humanity's Last Exam

AA · Reasoning / math / science · Objective

It is one of the cleaner reads on deliberate reasoning strength rather than style or popularity.

Rank #7 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 55.6%
Percentile: 98.9%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `hle`.

98.9% percentile inside its fair comparison set

55.6%Raw benchmark value

CritPt

AA · Reasoning / math / science · Objective

It is one of the cleaner reads on deliberate reasoning strength rather than style or popularity.

Rank #11 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 30.9%
Percentile: 98%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `critpt`.

98% percentile inside its fair comparison set

30.9%Raw benchmark value

Text Arena · Math

AR · Reasoning / math / science · Human

It is one of the cleaner reads on deliberate reasoning strength rather than style or popularity.

Rank #8 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,510
Percentile: 98.1%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: math. Source rank: #8. Votes: 235. Organization: anthropic. License: Proprietary.

98.1% percentile inside its fair comparison set

1,510Raw benchmark valueCI 1,475 - 1,546

Text Arena · Math · No Style Control

AR · Reasoning / math / science · Human

It is one of the cleaner reads on deliberate reasoning strength rather than style or popularity.

Rank #8 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,516
Percentile: 98.1%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: math. Source rank: #8. Votes: 235. Organization: anthropic. License: Proprietary.

98.1% percentile inside its fair comparison set

1,516Raw benchmark valueCI 1,480 - 1,552

Professional reasoning18 benchmarksn/a

Text Arena · Expert

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena expert leaderboard.

Rank #6 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,541
Percentile: 98.5%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: expert. Source rank: #6. Votes: 505. Organization: anthropic. License: Proprietary.

98.5% percentile inside its fair comparison set

1,541Raw benchmark valueCI 1,514 - 1,567

Text Arena · Industry Business And Management And Financial Operations

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_business_and_management_and_financial_operations leaderboard.

Rank #12 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,489
Percentile: 97%
Last updated: recent
Eligibility: headline eligible

97% percentile inside its fair comparison set

1,489Raw benchmark valueCI 1,468 - 1,510

Text Arena · Industry Entertainment And Sports And Media

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_entertainment_and_sports_and_media leaderboard.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,501
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_entertainment_and_sports_and_media. Source rank: #2. Votes: 1181. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,501Raw benchmark valueCI 1,483 - 1,519

Text Arena · Industry Legal And Government

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_legal_and_government leaderboard.

Rank #21 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,493
Percentile: 94.3%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_legal_and_government. Source rank: #21. Votes: 425. Organization: anthropic. License: Proprietary.

94.3% percentile inside its fair comparison set

1,493Raw benchmark valueCI 1,464 - 1,522

Text Arena · Industry Life And Physical And Social Science

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_life_and_physical_and_social_science leaderboard.

Rank #7 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,521
Percentile: 98.4%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_life_and_physical_and_social_science. Source rank: #7. Votes: 764. Organization: anthropic. License: Proprietary.

98.4% percentile inside its fair comparison set

1,521Raw benchmark valueCI 1,500 - 1,543

Text Arena · Industry Mathematical

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_mathematical leaderboard.

Rank #6 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,521
Percentile: 98.6%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_mathematical. Source rank: #6. Votes: 290. Organization: anthropic. License: Proprietary.

98.6% percentile inside its fair comparison set

1,521Raw benchmark valueCI 1,489 - 1,553

Text Arena · Industry Medicine And Healthcare

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_medicine_and_healthcare leaderboard.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,539
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_medicine_and_healthcare. Source rank: #2. Votes: 318. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,539Raw benchmark valueCI 1,505 - 1,573

Text Arena · Industry Software And It Services

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_software_and_it_services leaderboard.

Rank #9 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,530
Percentile: 97.9%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_software_and_it_services. Source rank: #9. Votes: 1643. Organization: anthropic. License: Proprietary.

97.9% percentile inside its fair comparison set

1,530Raw benchmark valueCI 1,516 - 1,544

Text Arena · Industry Writing And Literature And Language

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_writing_and_literature_and_language leaderboard.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,519
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_writing_and_literature_and_language. Source rank: #2. Votes: 1359. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,519Raw benchmark valueCI 1,502 - 1,536

Text Arena · Expert · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena expert leaderboard.

Rank #3 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,551
Percentile: 99.4%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: expert. Source rank: #3. Votes: 505. Organization: anthropic. License: Proprietary.

99.4% percentile inside its fair comparison set

1,551Raw benchmark valueCI 1,524 - 1,577

Text Arena · Industry Business And Management And Financial Operations · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_business_and_management_and_financial_operations leaderboard.

Rank #8 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,492
Percentile: 98.1%
Last updated: recent
Eligibility: headline eligible

98.1% percentile inside its fair comparison set

1,492Raw benchmark valueCI 1,471 - 1,512

Text Arena · Industry Entertainment And Sports And Media · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_entertainment_and_sports_and_media leaderboard.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,513
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_entertainment_and_sports_and_media. Source rank: #2. Votes: 1181. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,513Raw benchmark valueCI 1,495 - 1,531

Text Arena · Industry Legal And Government · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_legal_and_government leaderboard.

Rank #7 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,509
Percentile: 98.3%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_legal_and_government. Source rank: #7. Votes: 425. Organization: anthropic. License: Proprietary.

98.3% percentile inside its fair comparison set

1,509Raw benchmark valueCI 1,481 - 1,538

Text Arena · Industry Life And Physical And Social Science · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_life_and_physical_and_social_science leaderboard.

Rank #4 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,527
Percentile: 99.2%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_life_and_physical_and_social_science. Source rank: #4. Votes: 764. Organization: anthropic. License: Proprietary.

99.2% percentile inside its fair comparison set

1,527Raw benchmark valueCI 1,506 - 1,548

Text Arena · Industry Mathematical · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_mathematical leaderboard.

Rank #5 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,529
Percentile: 98.9%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_mathematical. Source rank: #5. Votes: 290. Organization: anthropic. License: Proprietary.

98.9% percentile inside its fair comparison set

1,529Raw benchmark valueCI 1,497 - 1,561

Text Arena · Industry Medicine And Healthcare · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_medicine_and_healthcare leaderboard.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,535
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_medicine_and_healthcare. Source rank: #2. Votes: 318. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,535Raw benchmark valueCI 1,501 - 1,569

Text Arena · Industry Software And It Services · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_software_and_it_services leaderboard.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,530
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_software_and_it_services. Source rank: #2. Votes: 1643. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,530Raw benchmark valueCI 1,516 - 1,544

Text Arena · Industry Writing And Literature And Language · No Style Control

AR · Professional reasoning · Human

Observed user preference in Arena's Text Arena industry_writing_and_literature_and_language leaderboard.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,531
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: industry_writing_and_literature_and_language. Source rank: #2. Votes: 1359. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,531Raw benchmark valueCI 1,514 - 1,548

Long context1 benchmark94.7%

Long Context Reasoning

AA · Long context · Objective

It checks whether long-context claims survive contact with retrieval, memory, or long-document tasks.

Rank #26 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 82.7%
Percentile: 94.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `lcr`.

94.7% percentile inside its fair comparison set

82.7%Raw benchmark value

Vision understanding1 benchmark97.1%

MMMU-Pro

AA · Vision understanding · Objective

It is useful when the model must read charts, UI, screenshots, or visual scenes rather than text alone.

Rank #7 · Source label: Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Artificial Analysis
Raw value: 85.8%
Percentile: 97.1%
Last updated: recent
Eligibility: headline eligible

Parsed from Artificial Analysis public leaderboard field `mmmuPro`.

97.1% percentile inside its fair comparison set

85.8%Raw benchmark value

Multilingual6 benchmarksn/a

Text Arena · Chinese

AR · Multilingual · Human

Observed user preference in Arena's Text Arena chinese leaderboard.

Rank #2 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,571
Percentile: 99.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: chinese. Source rank: #2. Votes: 402. Organization: anthropic. License: Proprietary.

99.7% percentile inside its fair comparison set

1,571Raw benchmark valueCI 1,542 - 1,601

Text Arena · Non English

AR · Multilingual · Human

Observed user preference in Arena's Text Arena non_english leaderboard.

Rank #3 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,494
Percentile: 99.5%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: non_english. Source rank: #3. Votes: 2829. Organization: anthropic. License: Proprietary.

99.5% percentile inside its fair comparison set

1,494Raw benchmark valueCI 1,483 - 1,505

Text Arena · Russian

AR · Multilingual · Human

Observed user preference in Arena's Text Arena russian leaderboard.

Rank #9 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,504
Percentile: 97.7%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: russian. Source rank: #9. Votes: 605. Organization: anthropic. License: Proprietary.

97.7% percentile inside its fair comparison set

1,504Raw benchmark valueCI 1,480 - 1,527

Text Arena · Chinese · No Style Control

AR · Multilingual · Human

Observed user preference in Arena's Text Arena chinese leaderboard.

Rank #3 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,583
Percentile: 99.4%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: chinese. Source rank: #3. Votes: 402. Organization: anthropic. License: Proprietary.

99.4% percentile inside its fair comparison set

1,583Raw benchmark valueCI 1,554 - 1,613

Text Arena · Non English · No Style Control

AR · Multilingual · Human

Observed user preference in Arena's Text Arena non_english leaderboard.

Rank #3 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,503
Percentile: 99.5%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: non_english. Source rank: #3. Votes: 2829. Organization: anthropic. License: Proprietary.

99.5% percentile inside its fair comparison set

1,503Raw benchmark valueCI 1,492 - 1,514

Text Arena · Russian · No Style Control

AR · Multilingual · Human

Observed user preference in Arena's Text Arena russian leaderboard.

Rank #6 · Source label: claude-opus-5.5-high

verified runtimeexact alias

Raw row drilldownsource row, percentile, last updated, eligibility

Source: Arena
Raw value: 1,507
Percentile: 98.5%
Last updated: recent
Eligibility: headline eligible

Parsed from Arena leaderboard dataset row `claude-opus-5.5-high`. Category: russian. Source rank: #6. Votes: 605. Organization: anthropic. License: Proprietary.

98.5% percentile inside its fair comparison set

1,507Raw benchmark valueCI 1,484 - 1,531

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claude-opus-5.5-high

Current snapshot.

Source-linked scores by benchmark

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claude-opus-5.5-high

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Source-linked scores by benchmark

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